Alabama is about 283 times bigger than Northern Mariana Islands.

Northern Mariana Islands is approximately 464 sq km, while Alabama is approximately 131,426 sq km, making Alabama 28,225% larger than Northern Mariana Islands. Meanwhile, the population of Northern Mariana Islands is ~51,475 people (4.7 million more people live in Alabama).
Tip: This to-scale comparison of Northern Mariana Islands vs. Alabama uses the Mercator projection, which distorts the size of regions near the poles.